Why do we need MFA
Just using a password is not enough. Password leakage, phishing, and keylogging are all possible. Adding an extra layer of MFA greatly enhances account security.
Various MFA comparisons
SMS: Convenient, but prone to SIM hijacking. App Validator (TOTP): Great recommendation. Hardware Key (FIDO2): The most secure and anti phishing.
Practical suggestions
Open MFA for all important accounts; Prioritize using hardware keys or apps; Don't just use text messages; Make a backup of the recovery code.
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